Routing Table Report 00:00 GMT Thu 26 May, 2011
NB: RouteViews data includes iBGP information from some ASNs.
Treat the information provided below appropriately.
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/rviews/
Analysis Summary
----------------
BGP routing table entries examined: 362597
Prefixes after maximum aggregation: 163367
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 176913
Total ASes present in the Internet Routing Table: 37702
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31588
Origin ASes announcing only one prefix: 15066
Transit ASes present in the Internet Routing Table: 5010
Transit-only ASes present in the Internet Routing Table: 127
Average AS path length visible in the Internet Routing Table: 4.0
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 3309
Unregistered ASNs in the Routing Table: 379
Number of 32-bit ASNs allocated by the RIRs: 1377
Number of 32-bit ASNs visible in the Routing Table: 1104
Prefixes from 32-bit ASNs in the Routing Table: 2519
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 171
Number of addresses announced to Internet: 2437595367
Equivalent to 145 /8s, 74 /16s and 192 /24s
Percentage of available address space announced: 65.8
Percentage of allocated address space announced: 65.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.9
Total number of prefixes smaller than registry allocations: 150544
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87271
Total APNIC prefixes after maximum aggregation: 29000
APNIC Deaggregation factor: 3.01
Prefixes being announced from the APNIC address blocks: 83772
Unique aggregates announced from the APNIC address blocks: 36647
APNIC Region origin ASes present in the Internet Routing Table: 4445
APNIC Prefixes per ASN: 18.85
APNIC Region origin ASes announcing only one prefix: 1252
APNIC Region transit ASes present in the Internet Routing Table: 673
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 27
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 616460737
Equivalent to 36 /8s, 190 /16s and 113 /24s
Percentage of available APNIC address space announced: 78.2
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 175/8, 180/8,
182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8,
219/8, 220/8, 221/8, 222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 143579
Total ARIN prefixes after maximum aggregation: 73416
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115504
Unique aggregates announced from the ARIN address blocks: 45680
ARIN Region origin ASes present in the Internet Routing Table: 14401
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5470
ARIN Region transit ASes present in the Internet Routing Table: 1460
Average ARIN Region AS path length visible: 3.5
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 801913368
Equivalent to 47 /8s, 204 /16s and 58 /24s
Percentage of available ARIN address space announced: 63.7
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 393216-394239
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8,
53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8,
65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8,
72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8,
98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 173/8,
174/8, 184/8, 199/8, 204/8, 205/8, 206/8, 207/8,
208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 87899
Total RIPE prefixes after maximum aggregation: 48680
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 80549
Unique aggregates announced from the RIPE address blocks: 51575
RIPE Region origin ASes present in the Internet Routing Table: 15660
RIPE Prefixes per ASN: 5.14
RIPE Region origin ASes announcing only one prefix: 7774
RIPE Region transit ASes present in the Internet Routing Table: 2449
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 818
Number of RIPE addresses announced to Internet: 474586732
Equivalent to 28 /8s, 73 /16s and 158 /24s
Percentage of available RIPE address space announced: 76.5
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
196608-198655
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8,
176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 33000
Total LACNIC prefixes after maximum aggregation: 7531
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 32065
Unique aggregates announced from the LACNIC address blocks: 16803
LACNIC Region origin ASes present in the Internet Routing Table: 1456
LACNIC Prefixes per ASN: 22.02
LACNIC Region origin ASes announcing only one prefix: 430
LACNIC Region transit ASes present in the Internet Routing Table: 262
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 222
Number of LACNIC addresses announced to Internet: 83847176
Equivalent to 4 /8s, 255 /16s and 104 /24s
Percentage of available LACNIC address space announced: 55.5
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 8038
Total AfriNIC prefixes after maximum aggregation: 1906
AfriNIC Deaggregation factor: 4.22
Prefixes being announced from the AfriNIC address blocks: 6351
Unique aggregates announced from the AfriNIC address blocks: 1917
AfriNIC Region origin ASes present in the Internet Routing Table: 457
AfriNIC Prefixes per ASN: 13.90
AfriNIC Region origin ASes announcing only one prefix: 140
AfriNIC Region transit ASes present in the Internet Routing Table: 103
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23219200
Equivalent to 1 /8s, 98 /16s and 76 /24s
Percentage of available AfriNIC address space announced: 34.6
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1903 9508 619 Korea Telecom (KIX)
17974 1839 508 33 PT TELEKOMUNIKASI INDONESIA
7545 1538 301 87 TPG Internet Pty Ltd
4755 1470 634 166 Videsh Sanchar Nigam Ltd. Aut
24560 1151 336 184 Bharti Airtel Ltd.
7552 1140 1064 7 Vietel Corporation
9583 1083 81 512 Sify Limited
9829 1040 875 51 BSNL National Internet Backbo
18101 933 116 141 Reliance Infocom Ltd Internet
17488 892 157 142 Hathway IP Over Cable Interne
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3647 3822 256 bellsouth.net, inc.
4323 1967 1081 398 Time Warner Telecom
18566 1915 362 267 Covad Communications
1785 1791 681 123 AppliedTheory Corporation
6478 1702 316 48 AT&T Worldnet Services
20115 1585 1543 633 Charter Communications
19262 1490 4919 308 Verizon Global Networks
7018 1375 7101 898 AT&T WorldNet Services
22773 1333 2897 88 Cox Communications, Inc.
11492 1280 240 15 Cable One
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
286 1013 798 176 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 520 1780 319 UPC Distribution Services
34984 517 106 180 Tellcom Iletisim Hizmetleri
3292 516 2062 397 TDC Tele Danmark
20940 461 135 353 Akamai Technologies European
29049 456 33 45 AzerSat LLC.
8866 444 134 26 Bulgarian Telecommunication C
12479 428 577 6 Uni2 Autonomous System
3320 424 8152 369 Deutsche Telekom AG
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1492 274 156 TVCABLE BOGOTA
8151 1380 2687 362 Uninet S.A. de C.V.
28573 1315 991 87 Types of queries are: POCs, o
7303 924 472 149 Telecom Argentina Stet-France
6503 733 354 74 AVANTEL, S.A.
14420 670 54 91 Types of queries are: POCs, o
22047 565 310 15 Types of queries are: POCs, o
3816 523 227 100 COLOMBIA TELECOMUNICACIONES S
13489 517 262 121 Orbitel S.A. E.S.P.
27947 504 53 46 Telconet S.A
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 879 445 11 TEDATA
24863 787 147 37 LINKdotNET AS number
15475 544 90 8 Nile Online
36992 289 315 18 Etisalat MISR
3741 263 937 226 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 208 78 10 RAYA Telecom - Egypt
29571 162 17 11 Ci Telecom Autonomous system
16637 153 441 87 Johnnic e-Ventures
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3647 3822 256 bellsouth.net, inc.
23456 2519 630 1368 >>UNKNOWN<<
4323 1967 1081 398 Time Warner Telecom
18566 1915 362 267 Covad Communications
4766 1903 9508 619 Korea Telecom (KIX)
17974 1839 508 33 PT TELEKOMUNIKASI INDONESIA
1785 1791 681 123 AppliedTheory Corporation
6478 1702 316 48 AT&T Worldnet Services
20115 1585 1543 633 Charter Communications
7545 1538 301 87 TPG Internet Pty Ltd
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
17974 1839 1806 PT TELEKOMUNIKASI INDONESIA
1785 1791 1668 AppliedTheory Corporation
6478 1702 1654 AT&T Worldnet Services
18566 1915 1648 Covad Communications
4323 1967 1569 Time Warner Telecom
7545 1538 1451 TPG Internet Pty Ltd
10620 1492 1336 TVCABLE BOGOTA
4755 1470 1304 Videsh Sanchar Nigam Ltd. Aut
4766 1903 1284 Korea Telecom (KIX)
11492 1280 1265 Cable One
Complete listing at http://thyme.rand.apnic.net/rviews/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
26973 UNALLOCATED 12.39.152.0/24 1239 Sprint
26973 UNALLOCATED 12.39.154.0/23 1239 Sprint
26973 UNALLOCATED 12.39.155.0/24 1239 Sprint
26973 UNALLOCATED 12.39.159.0/24 1239 Sprint
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/rviews/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
10.29.244.56/29 286 KPNQwest Backbone AS
10.29.245.1/32 286 KPNQwest Backbone AS
10.29.245.2/32 286 KPNQwest Backbone AS
10.29.245.15/32 286 KPNQwest Backbone AS
10.29.245.19/32 286 KPNQwest Backbone AS
10.29.245.20/32 286 KPNQwest Backbone AS
10.29.245.21/32 286 KPNQwest Backbone AS
10.29.245.22/32 286 KPNQwest Backbone AS
10.29.245.25/32 286 KPNQwest Backbone AS
10.29.245.26/32 286 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-dsua
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
27.0.128.0/17 7514 Media Exchange, Inc.
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
41.190.36.0/23 31856 CABSAS
Complete listing at http://thyme.rand.apnic.net/rviews/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:21 /9:12 /10:28 /11:80 /12:228
/13:460 /14:802 /15:1426 /16:11925 /17:6083 /18:10071
/19:19847 /20:26407 /21:26367 /22:34455 /23:33605 /24:188131
/25:373 /26:350 /27:172 /28:295 /29:177 /30:598
/31:67 /32:617
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2246 3647 bellsouth.net, inc.
18566 1873 1915 Covad Communications
6478 1656 1702 AT&T Worldnet Services
10620 1382 1492 TVCABLE BOGOTA
23456 1227 2519 >>UNKNOWN<<
11492 1226 1280 Cable One
7011 1061 1160 Citizens Utilities
1785 1051 1791 AppliedTheory Corporation
4323 882 1967 Time Warner Telecom
286 873 1013 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:280 2:70 4:20 5:1 6:3 8:353
12:1987 13:1 14:461 15:15 16:3 17:8
20:10 23:7 24:1638 27:776 31:354 32:126
33:4 34:2 37:1 38:740 40:101 41:2530
42:5 44:3 46:929 47:3 49:192 50:421
52:13 54:2 55:4 56:2 57:40 58:849
59:485 60:386 61:1238 62:1060 63:1951 64:3977
65:2287 66:4164 67:1891 68:1262 69:3092 70:748
71:357 72:1917 73:3 74:2414 75:315 76:349
77:901 78:709 79:484 80:1106 81:825 82:510
83:447 84:697 85:1071 86:604 87:784 88:336
89:1559 90:203 91:3796 92:518 93:1071 94:1298
95:817 96:506 97:249 98:858 99:35 101:59
103:18 106:1 107:7 108:84 109:950 110:601
111:714 112:307 113:399 114:537 115:650 116:962
117:695 118:825 119:1138 120:306 121:672 122:1624
123:997 124:1263 125:1228 128:263 129:175 130:164
131:575 132:109 133:19 134:214 135:48 136:213
137:144 138:301 139:124 140:483 141:239 142:405
143:398 144:484 145:54 146:447 147:220 148:589
149:244 150:168 151:186 152:326 153:178 154:3
155:396 156:194 157:353 158:136 159:388 160:317
161:207 162:282 163:164 164:507 165:371 166:513
167:426 168:731 169:154 170:797 171:77 172:1
173:1577 174:552 175:372 176:1 177:141 178:991
180:848 181:17 182:450 183:206 184:364 185:1
186:1171 187:746 188:861 189:893 190:4816 192:5829
193:4873 194:3534 195:3119 196:1234 197:18 198:3609
199:3926 200:5548 201:1497 202:8335 203:8414 204:4181
205:2335 206:2754 207:2912 208:3982 209:3480 210:2741
211:1431 212:2046 213:1783 214:733 215:72 216:4924
217:1633 218:571 219:366 220:1205 221:492 222:340
223:149
End of report
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